Patent US2856925A successfully refreshed from Google Patents.
US2856925A
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US
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Syringe structure
Assignee: EASTON
•
Filing: 1957-11-25
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Granted: 1958-10-21
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Expires: 1977-11-25
Abstract
No abstract record available.
Inventors
- 👤 Norman D Helmer
- 👤 Fred H Easton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:52
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/315; A61M5/31565; A61M5/3159; A61M5/31593; A61M5/31595; A61M5/31591; A61M5/31566; A61M5/31573
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2373520A
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US2474496A
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US2578812A
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US2571653A
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US2607343A
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US2629517A
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US2707954A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |